A generation is 25 years, so you do the math. 12 - 13 is getting up there for a dog that size, so he was probably into his declining years and slowing down, which would explain why he got hit.
Personally I think it looks more like a chow-coyote mix than a wolf mix.
chow-coyote mix than a wolf mix.
I was thinking the same - the blue tongue cinches it for me